Revert "Battery customization"

This reverts commit a2a77b6a819246455494191661a72c745ead9806.

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/mintkat_strings.xml
	packages/SystemUI/src/com/android/systemui/BatteryMeterView.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java